Gavin Ashenden, a former chaplain to the Queen and a Christian Episcopal Church missionary bishop, said the comments were not Christian.

"To use prayer as a mechanism for wishing this on Prince George is an unkind and destructive thing to do," he told the BBC.

"It doesn't have the prince's best interests at heart, but uses him as a gender-political football to please 1.7% of the population.

"What is especially odd and incongruous is the fact that it is suddenly OK to pray for someone to be gay, but totally unacceptable to pray for them to be free from being gay and to resume a sexuality that was in tune with their biology.

"This seems not only contradictory but hypocritical."

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Susie Leafe, the director of the conservative evangelical group Reform, was also critical of Mr Holdsworth's blog.

"I was very disappointed that he was prepared to bring a child in to this same-sex marriage debate," she told the BBC.

"As a Christian minister he should pray for all people to come to know the love of Christ, rather than a fine young gentleman."

The Church of England declined to comment on Mr Holdsworth's blog post as he is a member of the Scottish Episcopal Church.

Rt Rev Dr Gregor Duncan, Bishop of Glasgow and Galloway, said: "The comments made by Provost Holdsworth were made on his personal blog.

"As his blog indicates, the views expressed there are his personal ones.

"They do not represent an official view of the Scottish Episcopal Church nor are they ones with which I would concur. I will be discussing this matter with Provost Holdsworth."